Measurement of the mass difference between top and antitop quarks

Aaltonen, T. et al. (2013) Measurement of the mass difference between top and antitop quarks. Physical Review D, 87(5), 052013. (doi:10.1103/PhysRevD.87.052013)

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Publisher's URL: http://dx.doi.org/10.1103/PhysRevD.87.052013

Abstract

We present a measurement of the mass difference between top (t) and antitop (t¯) quarks using tt¯ candidate events reconstructed in the final state with one lepton and multiple jets. We use the full data set of Tevatron s√=1.96  TeV proton-antiproton collisions recorded by the CDF II detector, corresponding to an integrated luminosity of 8.7  fb<sup>−1</sup>. We estimate event by event the mass difference to construct templates for top pair signal events and background events. The resulting mass difference distribution in data compared to signal and background templates using a likelihood fit yields ΔMtop=Mt−Mt¯=−1.95±1.11(stat)±0.59(syst)  GeV/c2 and is in agreement with the standard model prediction of no mass difference.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Robson, Professor Aidan and Buzatu, Dr Adrian and Bussey, Dr Peter and St Denis, Dr Richard
Authors: Aaltonen, T., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., Apollinari, G., Appel, J., Arisawa, T., Artikov, A., Asaadi, J., Ashmanskas, W., Auerbach, B., Aurisano, A., Azfar, F., Badgett, W., Bae, T., Barbaro-Galtieri, A., Barnes, V., Barnett, B., Barria, P., Bartos, P., Bauce, M., Bedeschi, F., Behari, S., Bellettini, G., Bellinger, J., Benjamin, D., Beretvas, A., Bhatti, A., Bland, K., Blumenfeld, B., Bocci, A., Bodek, A., Bortoletto, D., Boudreau, J., Boveia, A., Brigliadori, L., Bromberg, C., Brucken, E., Budagov, J., Budd, H., Burkett, K., Busetto, G., Bussey, P., Butti, P., Buzatu, A., Calamba, A., Camarda, S., Campanelli, M., Canelli, F., Carls, B., Carlsmith, D., Carosi, R., Carrillo, S., Casal, B., Casarsa, M., Castro, A., Catastini, P., Cauz, D., Cavaliere, V., Cavalli-Sforza, M., Cerri, A., Cerrito, L., Chen, Y., Chertok, M., Chiarelli, G., Chlachidze, G., Cho, K., Chokheli, D., Ciocci, M., Clark, A., Clarke, C., Convery, M., Conway, J., Corbo, M., Cordelli, M., Cox, C., Cox, D., Cremonesi, M., Cruz, D., Cuevas, J., Culbertson, R., d’Ascenzo, N., Datta, M., De Barbaro, P., Demortier, L., Deninno, M., Devoto, F., d’Errico, M., Di Canto, A., Di Ruzza, B., Dittmann, J., D’Onofrio, M., Donati, S., Dorigo, M., Driutti, A., Ebina, K., Edgar, R., Elagin, A., Erbacher, R., Errede, S., Esham, B., Eusebi, R., Farrington, S., Fernández Ramos, J., Field, R., Flanagan, G., Forrest, R., Franklin, M., Freeman, J., Frisch, H., Funakoshi, Y., Garfinkel, A., Garosi, P., Gerberich, H., Gerchtein, E., Giagu, S., Giakoumopoulou, V., Gibson, K., Ginsburg, C., Giokaris, N., Giromini, P., Giurgiu, G., Glagolev, V., Glenzinski, D., Gold, M., Goldin, D., Golossanov, A., Gomez, G., Gomez-Ceballos, G., Goncharov, M., González López, O., Gorelov, I., Goshaw, A., Goulianos, K., Gramellini, E., Grinstein, S., Grosso-Pilcher, C., Group, R., Guimaraes da Costa, J., Hahn, S., Han, J., Happacher, F., Hara, K., Hare, M., Harr, R., Harrington-Taber, T., Hatakeyama, K., Hays, C., Heinrich, J., Herndon, M., Hocker, A., Hong, Z., Hopkins, W., Hou, S., Hughes, R., Husemann, U., Huston, J., Introzzi, G., Iori, M., Ivanov, A., James, E., Jang, D., Jayatilaka, B., Jeon, E., Jindariani, S., Jones, M., Joo, K., Jun, S., Junk, T., Kambeitz, M., Kamon, T., Karchin, P., Kasmi, A., Kato, Y., Ketchum, W., Keung, J., Kilminster, B., Kim, D., Kim, H., Kim, J., Kim, M., Kim, S., Kim, S., Kim, Y., Kim, Y., Kimura, N., Kirby, M., Knoepfel, K., Kondo, K., Kong, D., Konigsberg, J., Kotwal, A., Kreps, M., Kroll, J., Kruse, M., Kuhr, T., Kurata, M., Laasanen, A., Lammel, S., Lancaster, M., Lannon, K., Latino, G., Lee, H., Lee, J., Leo, S., Leone, S., Lewis, J., Limosani, A., Lipeles, E., Liu, H., Liu, Q., Liu, T., Lockwitz, S., Loginov, A., Lucchesi, D., Lueck, J., Lujan, P., Lukens, P., Lungu, G., Lys, J., Lysak, R., Madrak, R., Maestro, P., Malik, S., Manca, G., Manousakis-Katsikakis, A., Margaroli, F., Marino, P., Martínez, M., Matera, K., Mattson, M., Mazzacane, A., Mazzanti, P., McNulty, R., Mehta, A., Mehtala, P., Mesropian, C., Miao, T., Mietlicki, D., Mitra, A., Miyake, H., Moed, S., Moggi, N., Moon, C., Moore, R., Morello, M., Mukherjee, A., Muller, T., Murat, P., Mussini, M., Nachtman, J., Nagai, Y., Naganoma, J., Nakano, I., Napier, A., Nett, J., Neu, C., Nigmanov, T., Nodulman, L., Noh, S., Norniella, O., Oakes, L., Oh, S., Oh, Y., Oksuzian, I., Okusawa, T., Orava, R., Ortolan, L., Pagliarone, C., Palencia, E., Palni, P., Papadimitriou, V., Parker, W., Pauletta, G., Paulini, M., Paus, C., Phillips, T., Piacentino, G., Pianori, E., Pilot, J., Pitts, K., Plager, C., Pondrom, L., Poprocki, S., Potamianos, K., Prokoshin, F., Pranko, A., Ptohos, F., Punzi, G., Ranjan, N., Redondo Fernández, I., Renton, P., Rescigno, M., Riddick, T., Rimondi, F., Ristori, L., Robson, A., Rodriguez, T., Rolli, S., Ronzani, M., Roser, R., Rosner, J., Ruffini, F., Ruiz, A., Russ, J., Rusu, V., Safonov, A., Sakumoto, W., Sakurai, Y., Santi, L., Sato, K., Saveliev, V., Savoy-Navarro, A., Schlabach, P., Schmidt, E., Schwarz, T., Scodellaro, L., Scuri, F., Seidel, S., Seiya, Y., Semenov, A., Sforza, F., Shalhout, S., Shears, T., Shepard, P., Shimojima, M., Shochet, M., Shreyber-Tecker, I., Simonenko, A., Sinervo, P., Sliwa, K., Smith, J., Snider, F., Sorin, V., Song, H., Stancari, M., St. Denis, R., Stelzer, B., Stelzer-Chilton, O., Stentz, D., Strologas, J., Sudo, Y., Sukhanov, A., Suslov, I., Takemasa, K., Takeuchi, Y., Tang, J., Tecchio, M., Teng, P., Thom, J., Thomson, E., Thukral, V., Toback, D., Tokar, S., Tollefson, K., Tomura, T., Tonelli, D., Torre, S., Torretta, D., Totaro, P., Trovato, M., Ukegawa, F., Uozumi, S., Vázquez, F., Velev, G., Vellidis, C., Vernieri, C., Vidal, M., Vilar, R., Vizán, J., Vogel, M., Volpi, G., Wagner, P., Wallny, R., Wang, S., Warburton, A., Waters, D., Wester, W., Whiteson, D., Wicklund, A., Wilbur, S., Williams, H., Wilson, J., Wilson, P., Winer, B., Wittich, P., Wolbers, S., Wolfe, H., Wright, T., Wu, X., Wu, Z., Yamamoto, K., Yamato, D., Yang, T., Yang, U., Yang, Y., Yao, W.-M., Yeh, G., Yi, K., Yoh, J., Yorita, K., Yoshida, T., Yu, G., Yu, I., Zanetti, A., Zeng, Y., Zhou, C., and Zucchelli, S.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review D
Publisher:American Physical Society
ISSN:1550-7998
ISSN (Online):1550-2368

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